Metallic check-blank



J MURDOOK,Jr Metallic Check-Blank.

No. 226,871. Patented April 27,1880.

WITNESSES u. PETERS. PHOTO UTNDGRAFN ER UNITED STATES PATENT OFFICE.

JAMES MURDOCK, JR, OF CINCINNATI, OHIO.

METALLIC CHECK-BLANK.

SPECIFICATION forming part of Letters Patent No. 226,871, dated April 27, 1880.

Application filed March 24, 1879. I

To all whom it may concern:

Be it known that 1-, JAMES MURDOCK, Jr, of Cincinnati, Hamilton county, Ohio, have imented a new and useful Improvement in Metallic Check-Blanks, of which the following is a specification.

This invention relates to blanks for checks or tags of metal used for attachment to baggage, keys, packages, 820.

Such blanks usually have stamped into their surfaces names, numbers, devices, 850., such stamping being done with stamps containing the lettering or devices.

The process of stamping upon. such blanks is not analogous to coining, for, in coining, the metal in the blank is caused to flow and fill the coining-dies, the blank being acted upon at every portion of its surface, resulting in a coin the shape of the die-cavities, while in stamping an impression is made in a flat surface already prepared. The margin of each detail becomes either burred or slurred, and the whole blank becomes strained and bent. To restore the check to flatness and to improve the character of the impression fiat hammers are used, which level the general surface and temper the check.

If the entire impression upon the check consists of dead sunken work, a crude and unsightly appearance results, and to remedy this it is usual to form the blank with raised milling' upon its surfaces near the edge, the milled ledges being formed by the usual coining process from thick stock, leaving a thin plain center for receiving the check-impressions. Checks made from such coined blanks cannot be straightened, resurfaced, or tempered between flat hammers, on account of the damage resulting to the milled ledges and the impossibility of reaching with flat hammers the general surface of the check.

The object of my invention is to produce a check -blank which will render available for stamping the full thickness of the stock, and which may be straightened, resurfaced, and tempered between flat hammers.

My invention consists of a sheet-metal blank having an annular sunken recess near its periphery, the bottom of the recess being the base for the raised portions of the ornamental border.

In the accompanying drawings, Figure 1 is a face View of my improved blank; Fig. 2, a perspective view of a portion of the edge, and Fig. 3 a section of a portion of the edge. Figs. 2 and 3 are drawn to an exaggerated scale.

The illustrations explain the device.

G is the annular recess near the edge of the blank, and D are raised elements having the bottom of the recess for a base. Their tops should not project above the general level of the blank. The full thickness of the stock is thus left for stamping, and no inj ury will result to the ornamental work within the recess from the use of flat hammers.

The recess may be placed in one or both sides.

I claim as my invention A metallic check-blank formed with a flat center of uniform thickness, an outer margin of equal thickness with the center, an inner margin of less thickness than said center and outer margin, and raised elements seated upon the bottom surface of the inner margin, the projection of said raised elements being not greater than the projection of said center and said outer margin from the bottom surface of the inner margin, substantially as set forth,

Witnesses J. W. SEE, JNO. STAFFORD. 

